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Full Discussion: How to create a volume group, logical volume group and file system?
Top Forums UNIX for Dummies Questions & Answers How to create a volume group, logical volume group and file system? Post 302770041 by zaxxon on Thursday 14th of February 2013 08:57:17 AM
Old 02-14-2013
I assume you are talking about AIX LVM?

If this is the case, you should have a look in here:
IBM Info Center

The maximum number of Physical Partitions (PP) per Physical Volume (PV) is 1016. So if your 200 GB belong to one PV, you should have at least a PP size of 256 MB to use all space on it. You can do the maths yourself.

In short, the concept is:

PV --- VG (parted into PPs) --- LV (related to LP) --- FS

PPs are related with LPs. When you have a mirrored LV for example, you usually have 2 PPs that backup 1 LP. Best choice is to have both PPs on different PVs of course.
  • A PV can be any kind of disk, local, SAN LUN, whatever.
  • A PV can not belong to more than one VG.
  • A VG can have more than one PV but at least 1.
  • A VG can have more than one LV.
  • A FS needs a LV beneath. A FS is related 1:1 with a LV
  • There are types of LVs that do not need a FS on top, like Raw-LVs etc.
 

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LEARN ABOUT DEBIAN

vgremove

VGREMOVE(8)						      System Manager's Manual						       VGREMOVE(8)

NAME

       vgremove - remove a volume group

SYNOPSIS

       vgremove [-d|--debug] [-f|--force] [-h|-?|--help] [--noudevsync] [-t|--test] [-v|--verbose] VolumeGroupName [VolumeGroupName...]

DESCRIPTION

       vgremove  allows  you to remove one or more volume groups.  If one or more physical volumes in the volume group are lost, consider vgreduce
       --removemissing to make the volume group metadata consistent again.

       If there are logical volumes that exist in the volume group, a prompt will be given to confirm removal.	You can override the  prompt  with
       -f.

OPTIONS

       See lvm for common options.

       -f, --force
	      Force the removal of any logical volumes on the volume group without confirmation.

       --noudevsync
	      Disable  udev  synchronisation. The process will not wait for notification from udev.  It will continue irrespective of any possible
	      udev processing in the background.  You should only use this if udev is not running or has rules that ignore the devices	LVM2  cre-
	      ates.

SEE ALSO

       lvm(8), lvremove(8), vgcreate(8), vgreduce(8)

Sistina Software UK					 LVM TOOLS 2.02.95(2) (2012-03-06)					       VGREMOVE(8)
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